A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5990-00-331-4459
NSN 5950-01-464-4196
NSN 6610-01-629-4140
NSN 5935-01-474-0048
NSN 5950-01-319-3047
NSN 7035-01-517-1713
NSN 6150-00-518-4558
NSN 6145-00-911-9245
NSN 6145-01-381-2529
NSN 5905-00-192-4504
NSN 5975-01-316-7096
NSN 6220-01-583-3278